Undervoltage release NZM4-XU208-240AC 266193

Voltage drop-out trigger for NZM and N circuit breakers

This accessory, dedicated to the NZM and N series of circuit breakers from Eaton, provides reliable disconnection in the event of a control voltage drop. It is a key solution in systems requiring emergency shutdown, especially in conjunction with emergency stop buttons. The NZM4-XU208-240AC undervoltage trigger reacts to a voltage drop below 35-70% of the nominal voltage (Us), guaranteeing safe and effective operation in crisis situations.

Application and functionality

This trigger is widely used in industrial and commercial installations where reliability and safety are a priority. Its main task is to disconnect the circuit in the event of a control voltage failure, protecting equipment and personnel from potential hazards. Because the undervoltage trigger is not energized, attempts to switch on the circuit breaker are blocked, further increasing safety during maintenance or repair work.

Compatibility and mounting

The NZM4-XU208-240AC trigger is compatible with NZM4(-4) and N(S)4(-4) circuit breakers. Installation is simple and flexible thanks to the modular design of the NZM series. It is important to remember the limitation – the undervoltage trigger should not be mounted simultaneously with the leading auxiliary contact NZM..-XHIV.. or the operating current trigger NZM..-XA.... The electrical connection is made using screw connections.

Key features:

• Reaction to voltage drop: Disconnects the circuit when the control voltage drops below 35-70% Us.
• Safety: Provides reliable disconnection in emergency situations, protecting equipment and personnel.
• Compatibility: Designed for NZM4(-4) and N(S)4(-4) circuit breakers.
• Easy installation: Modular design simplifies installation and integration with existing systems.
• Touch protection: Blocking the switch-on when there is no control voltage minimizes the risk of electric shock.
• AC rated voltage: Operates in the range of 208 - 240 V AC for frequencies of 50 Hz and 60 Hz.
• Connection type: Screw connection provides a stable and reliable electrical connection.